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Message-ID: <4767328B.70601@redhat.com> Date: Mon, 17 Dec 2007 21:38:03 -0500 From: Hideo AOKI <haoki@...hat.com> To: David Miller <davem@...emloft.net>, Herbert Xu <herbert@...dor.apana.org.au>, netdev <netdev@...r.kernel.org> CC: Takahiro Yasui <tyasui@...hat.com>, Masami Hiramatsu <mhiramat@...hat.com>, Satoshi Oshima <satoshi.oshima.fk@...achi.com>, Bill Fink <billfink@...dspring.com>, Andi Kleen <andi@...stfloor.org>, Evgeniy Polyakov <johnpol@....mipt.ru>, Stephen Hemminger <shemminger@...ux-foundation.org>, yoshfuji@...ux-ipv6.org, Yumiko Sugita <yumiko.sugita.yf@...achi.com>, haoki@...hat.com Subject: [PATCH 1/4] [UDP]: fix send buffer check This patch introduces sndbuf size check before memory allocation for send buffer. signed-off-by: Satoshi Oshima <satoshi.oshima.fk@...achi.com> signed-off-by: Hideo Aoki <haoki@...hat.com> --- ip_output.c | 5 +++++ 1 file changed, 5 insertions(+) diff -pruN net-2.6/net/ipv4/ip_output.c net-2.6-udp-take11a1-p1/net/ipv4/ip_output.c --- net-2.6/net/ipv4/ip_output.c 2007-12-11 10:54:55.000000000 -0500 +++ net-2.6-udp-take11a1-p1/net/ipv4/ip_output.c 2007-12-17 14:42:31.000000000 -0500 @@ -1004,6 +1004,11 @@ alloc_new_skb: frag = &skb_shinfo(skb)->frags[i]; } } else if (i < MAX_SKB_FRAGS) { + if (atomic_read(&sk->sk_wmem_alloc) + PAGE_SIZE + > 2 * sk->sk_sndbuf) { + err = -ENOBUFS; + goto error; + } if (copy > PAGE_SIZE) copy = PAGE_SIZE; page = alloc_pages(sk->sk_allocation, 0); -- Hitachi Computer Products (America) Inc. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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